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From: Jason Gunthorpe <jgg@nvidia.com>
To: Cheng Xu <chengyou@linux.alibaba.com>, BMT@zurich.ibm.com
Cc: leon@kernel.org, linux-rdma@vger.kernel.org
Subject: Re: [PATCH] RDMA/siw: Fix a condition race issue in MPA request processing
Date: Wed, 4 May 2022 11:33:37 -0300	[thread overview]
Message-ID: <20220504143337.GA69830@nvidia.com> (raw)
In-Reply-To: <d528d83466c44687f3872eadcb8c184528b2e2d4.1650526554.git.chengyou@linux.alibaba.com>

On Sun, Apr 24, 2022 at 04:01:03PM +0800, Cheng Xu wrote:
> The calling of siw_cm_upcall and detaching new_cep with its
> listen_cep should be atomistic semantics. Otherwise siw_reject
> may be called in a temporary state, e,g, siw_cm_upcall is called
> but the new_cep->listen_cep has not being cleared.
> 
> This will generate a WARN in dmesg, which reported in:
> https://lore.kernel.org/all/Yliu2ROIh0nLk5l0@bombadil.infradead.org/
> 
> Reported-by: Luis Chamberlain <mcgrof@kernel.org>
> Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
> ---
>  drivers/infiniband/sw/siw/siw_cm.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

Bernard?

Thanks,
Jason

  reply	other threads:[~2022-05-04 14:33 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-24  8:01 [PATCH] RDMA/siw: Fix a condition race issue in MPA request processing Cheng Xu
2022-05-04 14:33 ` Jason Gunthorpe [this message]
2022-05-05  0:03 ` Jason Gunthorpe
2022-05-04 14:42 Bernard Metzler

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